Grading or separating machine.



'PATENTED JULY 7, 1908;

I A. s. aoss. GRADING on SEPARATING MAGHIN-E.

APPLICATION FILED HAB- lfl, 1907.

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GRADING OR SEPARATING MACHINE.

Specification of Letters Patent.

Patented July 7, 1908.

Application filed March 26, 1907. Serial No. 864,697.

State of Oregon, have invented new and useful Improvements in Grading or Separating Machines, of which the following is a specifi:

cation.

The invention relates to an improvement in separators designed primarily for the gradingror separation of any granular material.

he main object of the present invention is the provision of a separator in which the separating element is constructed for convenient adjustment to permit desired variation in separating effect. r

The invention will be described in the following specification, reference being had particularly to the accompanying drawings, in which:-

Figure 1 is a view in side elevation of a separator constructed in accordance with my invention. Fig. 2 an end elevation of the same. Fig. 3 an inner end view of the feeding drum. 4 a central longitudinal section of the same. F' 5 a broken longitudinal section through tie separating element. Fig. 6 an inner end elevation of the receiving drum.

Referring particularly to the drawings, wherein is shown the preferred embodiment of the present invention, my improved separator com rises a main shaft 1, of any desired lengtl i, designed to be supported adjacent its res ective ends in boxes 2 mounted upon end ames 3. The articular struc ture of the frame or of the oxes may vary in accordance with the particular use for which the separator is designed. a

The main shaft 1, between the boxes 2, is diametrically enlarged, as at 4, said enlarged portion being formed throughout its length with a thread 5, and with a longitudinally extending key seat 6, the latter preferably extending throughout the threaded portion of the shaft.

Adjacent one of the frames 3 the shaft 1 is arranged to support what I term the feedlug drum 7, 'referably a cylindrical casing of ppropriate ength having its interior diame- *ter gradually increased from one end toward Hie other, so that the inlet end 8 of the drum of less diameter interiorly than the outlet d 9. Adjacent the outlet end of the shell e drum is connected to a hub 10 b radially anged spokes 11, and said hu is inteof the shaft, the we riorly formed with a key 12, arranged to engage the key seat 6 of the main shaft. Adacent the opposite end of the shaft is ar ranged a recelving drum 13, comprising a disk 14 centrally formed with an opening 15 to encircle the enlar ed or threaded portion %1 of which openings is provided with a ke 16 to engage the key seat of the shaft. e drum 13 also includes an annular band or ring 17 connected with the disk 14 through the medium of transversely disposed pins 18, said pins being of a length to space the ring and drum the de sired distance apart, as clearly apparent from The se arating element 19 is arranged to encircle the main shaft' between the feeding and receivin drums, said separating element being in the orm of a coil spring, the respective terminals of which are secured to the res ective drums. The diameter of the coils of t e sprin separator is a proximately equal to that o the respective rums. The sprin is preferably formed of angular material, 0 slightl pyramidal sha e in cross section, so that t e proximate su aces of adjacent coils incline from each other toward the relatively outer surfaces of the spring member, as clearly shown at 20 in Fig. 5.

The collar 10 of the feeding drum is provided with a set screw 21 whereby the drum ma be secured in fixed relation longitudina y of the shaft, and the head or entrance 0 ening of the drum is closed by a disk 22 s ightly less in diameter than the interior diameter of the entrance opening of the drum and secured against movement by a tie strip 23 fixed to the disk and terminally secured beyond the drum to brackets 24 fixed to the adjacent frame 3, as clearly shown in Fig. 2. In the relativel u per portion the disk 22 is formed with a ee s rin 25, and to the forward surface of the isk 18 secured a metallic chute 26 0 en at the upper end to receive material and liaving a downwardly inclined bottom to direct the material through the opening in the disk.

An adjusting nut 27 is arra ed for threaded connection with the main s aft 1 beyond the receiving drum 13, the connection between the drum and nut being in any desired form so that in the adjustment of the nut, preferably through use of a suitable tool cooperating with an annular series of openings 28 formed in the nut, the receiving drum 13, and thereby the connected end of the spring -material is moved longitudinall of the sepamay be adjusted to and from the feedin ness be reversed from that position shown in drum. The separator is preferably operated Fig. 5, whereby the base fportions will be arthrough the usual fast and loose pu leys 29 ranged on the o'uter sirnaces of the spring and 30, mounted upon the main shaft beyond member. I contemplate this change as within the scope of the present invention.

Havin thus described the invention, what is claime as new, is:

1. A separator comprising a coiled spring, means for rotating the spring, a feeding drum secured to one end thereof, a head plate for said feeding drum fixed against rotation, a receiving rum secured to the other end thereof, and means for adjusting one of the drums with relation to the other.

2. A separator com arising a main shaft, 11 feedin drum fixed wit 1 relation to the shaft, a head plate for said feeding drum fixed against rotation, a receiving drum movable with relation to the shaft, means for controlling the movement of the receiving drum, and a coiled spring encircling the shaft and terminally secured to the respective drums.

3. A separator comprising a main shaft having a threaded portion, a feedin drum having an inclined inner surface an keyed upon the shaft, a fixed heading disk for said drum, a receiving drum keyed upon the shaft, an adjusting nut having threaded connection with the shaft and adapted to move the receiving drum longitudinally of the shaft, and a coiled separatm member encircling the shaft between the nuns and terminally connected to the respective drums.

4. A separator comprising a main shaft formed with a threaded ortion, a feeding drum keyed upon the shal t a head plate for said drum encircling the shaft and fixed against rotation, a receiving drum keyed upon the shaft, said drum comprising spaced annular members, and a coiled sprin terminally connected to the respective rums and encircling the shaft between them, said spring'coil being equal in diameter to the diameter of the respective drums and havin its respective convolutions spaced to provide a sifting medium, the sectional contour of each convolution of the spring being such as to increase the space between the adjacent convolutions from the inner surface of the coil toward the outer surface.

In testimony whereof, I affix in presence of two witnesses.

ALBERT S. GOSS.

one of the bearings.

In use the material deliveredto the feed drum is, by virtue of the inclined surface of said drum, fed into the separating member. As the parts are rotated it IS obvious that the rati member, due to the spira formation of the fitter, and throughout its movement therethrough is subjected to a separating action in accordance with the space between the roximate coils of said member.

Tffe separating member or spring may be adjusted to increase or decrease the separat ing effect by proper operation of the nut' 27, b which the space between the coils may be obviously increased or decreased. Any desired means, such as a lock nut or the like, may be used for securing the nut 27 in adjusted position. The invention also contemplates 21 conveyer of an ordinary type for transferring the material separated to place of deposit, and for this purpose a chain gear 31 is preferably fixed on the main shaft adj acent the tail box 2, whichadditionally serves as a. bearing collar for the shaft relative to said box, a second gear or hearing collar 32 being arranged on the main shaft in cooperation with the remaining box.

It is obvious from the construction described that the separator is adapted for the convenient and respective separation of material and is so constructed that it may be instantly regulated to separate various sizes of material without making any additions or variations in the machine structure. Furthermore, by the use of the coil separator the stock will be effectively directed len thwise the machine, and will be continuously separated durin the movement, the material retained by the se arating element being directed to and discffarged through the receiving drum. Again the machine construction readily adapts it for the usual air currents in separating processes, as the continuous agitation and movement of the stock renders the current of air more effective, while the positive spacing of the spring coil permits the use of a heavier blast, as it is impossible for the material it is desired to retain to be blown between the spring coils.

my signature Witnesses:

WALTER A. Goss, OWEN ANDERSON.

It is obvious that the relative inclinations proximate surfaces of the adjacent the spring may with equal effectiveof the coils of 

